To clarify, I bought my Z110BT about 3 years ago and performed the parking brake bypass correctly and successfully. It worked just fine until about 6 months ago. I've made no software changes or anything else (that I know of) that would cause it to display the nag message randomly after so long. I even popped open my dash and looked to make sure no wires were loose, shorting out, etc. Everything looks good in the dash. When i turn on my vehicle, sometimes the message doesn't appear... then it may appear 10 or 20 minutes later at random when I'm driving down the road. Other times, it appears when the system boots.